Jack O'Connor
1981–1987 · bats L / throws L · Baltimore Orioles, Minnesota Twins, Montreal Expos
20G
–AVG
–OBP
–SLG
More career statistics
0H
0HR
0RBI
0SB
14–17W–L
318.2IP
177K
4.91ERA
28GS
2SV
Career summary: MLB’s official regular-season totals. Season lines, splits and historical game logs below are reconstructed from the covered Retrosheet records and can differ in coverage or scorer revisions. Compare sources and coverage.
Why official totals and the game-record sums differ
The sources can disagree on historical scorer decisions, appearances, and which games belong to a major-league record. The career summary uses the official total; the source game rows retain their recorded values.
| Statistic | MLB official | Recorded game sum |
|---|---|---|
| Batting · Games | 20 | 129 |
Career batting
| G | PA | AB | R | H | 2B | 3B | HR | RBI | BB | K | SB | CS | HBP | SF | TB | AVG | OBP | SLG | OPS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | – | – | – | – |
Career pitching
| IP | G | GS | CG | W | L | SV | H | R | ER | HR | BB | K | HBP | WP | ERA | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 318.7 | 129 | 28 | 6 | 14 | 17 | 2 | 343 | 188 | 174 | 36 | 163 | 177 | 0 | 0 | 4.91 | 1.588 |
The three rarest things in this career
| Rarity | What | Date | Rate | Game |
|---|---|---|---|---|
| 40 | 8 walks allowed | 1982-07-26 | 1 in 511 pitcher-games | box score ↗ |
| 23 | 3 home runs allowed | 1983-05-06 | 1 in 112 pitcher-games | box score ↗ |
| 17 | 9 scoreless innings | 1982-08-28 | 1 in 62 pitcher-games | box score ↗ |
Season by season
| Year | Team | G | AB | H | HR | RBI | SB | AVG | IP | K |
|---|---|---|---|---|---|---|---|---|---|---|
| 1981 |  Minnesota Twins | 28 | – | – | – | – | – | – | 35 | 16 |
| 1982 | Minnesota Twins | 23 | – | – | – | – | – | – | 126 | 56 |
| 1983 | Minnesota Twins | 27 | – | – | – | – | – | – | 83 | 56 |
| 1984 | Minnesota Twins | 2 | – | – | – | – | – | – | 4 | – |
| 1985 |  Montreal Expos | 20 | – | – | – | – | – | – | 23 | 16 |
| 1987 |  Baltimore Orioles | 29 | – | – | – | – | – | – | 46 | 33 |